R API proposal

What's the simplest, most ergonomic and idiomatic equivalent of the following Python code in R?

```py
# Prompt for first and last names.
first_name, last_name = view(
box('First name', value='Boaty'),
box('Last name', value='McBoatface'),
)
# Print the entered values
view(f'Hello, {first_name} {last_name}!')
```

Source: https://nitro.h2o.ai/basics/#get-multiple-inputs-at-once

For context, this is what the above code would've looked like if Python didn't have destructuring assignments:

```py
# Prompt for first and last names.
result = view(
box('First name', name='first_name', value='Boaty'),
box('Last name', name='last_name', value='McBoatface'),
)
# Print the entered values
view(f'Hello, {result['first_name']} {result['last_name']}!')
```